//////////////////////////////////////////////////////////////////////////
//
//  Copyright (c) 2013, Image Engine Design Inc. All rights reserved.
//
//  Redistribution and use in source and binary forms, with or without
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//  met:
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//      * Redistributions in binary form must reproduce the above
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//        disclaimer in the documentation and/or other materials provided with
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//      * Neither the name of John Haddon nor the names of
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//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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//////////////////////////////////////////////////////////////////////////

#pragma once

#include "Gaffer/DependencyNode.h"

namespace Gaffer
{

class GAFFER_API SubGraph : public DependencyNode
{

	public :

		explicit SubGraph( const std::string &name=defaultName<SubGraph>() );
		~SubGraph() override;

		GAFFER_NODE_DECLARE_TYPE( Gaffer::SubGraph, SubGraphTypeId, DependencyNode );

		/// Does nothing
		void affects( const Plug *input, AffectedPlugsContainer &outputs ) const override;

		/// Returns getChild<BoolPlug>( "enabled" ).
		BoolPlug *enabledPlug() override;
		const BoolPlug *enabledPlug() const override;

		/// Implemented to allow a user to define a pass-through behaviour
		/// by wiring the nodes inside this sub graph up appropriately. The
		/// input to the output plug must be connected from a node inside
		/// the sub graph, where that node itself has its enabled plug driven
		/// by the external enabled plug, and the correspondingInput for the
		/// node comes from one of the inputs to the sub graph.
		Plug *correspondingInput( const Plug *output ) override;
		const Plug *correspondingInput( const Plug *output ) const override;

};

} // namespace Gaffer
